A controlled field test of surfactant-enhanced aquifer remediation

The presence of dense nonaqueous phase liquids is one of the principal problems associated with current ground-water remediation efforts. Standard pump-and-treat methods are ineffective largely because of the low aqueous solubilities of DNAPL components. Surfactants can increase DNAPL solubility and...

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Bibliographic Details
Published inGround water Vol. 34; no. 5; pp. 910 - 916
Main Authors Fountain, J.C. (State University of New York at Buffalo, Buffalo, NY.), Starr, R.C, Middleton, T, Beikirch, M, Taylor, C, Hodge, D
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.09.1996
Ground Water Publishing Company
Subjects
AGUAS SUBTERRANEAS
Bioremediation
CAPA FREATICA
CONTAMINANTES
Contamination
CONTROL DE LA CONTAMINACION
CORRIENTES SUBTERRANEAS
COURANT SOUTERRAIN
EAU SOUTERRAINE
Emulsions
Fluids
Groundwater
HIDROCARBUROS HALOGENADOS
HYDROCARBURE HALOGENE
LUTTE ANTIPOLLUTION
NAPPE SOUTERRAINE
ONTARIO
Organic compounds
POLLUANT
POLLUTION DE L'EAU
POLUCION DEL AGUA
PURIFICACION DEL AGUA
PURIFICATION DE L'EAU
Q1
SOLUBILIDAD
SOLUBILITE
SURFACTANT
SURFACTANTES
Water treatment
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Summary:The presence of dense nonaqueous phase liquids is one of the principal problems associated with current ground-water remediation efforts. Standard pump-and-treat methods are ineffective largely because of the low aqueous solubilities of DNAPL components. Surfactants can increase DNAPL solubility and hence have the potential for increasing the rate of DNAPL dissolution in pump-and-treat systems. To test the effectiveness of surfactants under field conditions, a controlled field test at Canadian Forces Base Borden was undertaken. Results indicate surfactant-enhanced aquifer remediation can rapidly remove the majority of DNAPL using simple modifications of a pump-and-treat system. As in all pump-and-treat systems, the efficiency is a function of the hydraulic conductivity. The persistence of high DNAPL concentrations at specific elevations within the aquifer throughout the test indicates that little vertical movement of DNAPL occurred as a result of the introduction of the surfactant. Since the test was stopped when small amounts of DNAPL still remained, the limit of removal was not investigated
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ISSN:0017-467X
1745-6584
DOI:10.1111/j.1745-6584.1996.tb02085.x